#include <iostream>
#include <unistd.h>
#include <stdlib.h>

using namespace std;
int main()
{
    int i = 0;
    for (i = 0; i < 5; i++)
    {
        cout<<"----------------------------------------------------------------"<<endl;
        cout << "我是另一个程序,我的pid是:" << getpid() <<endl;
        cout<<"MYENV: "<< (getenv("MYENV") == NULL ? "NULL" : getenv("MYENV")) << endl;
        cout<<"PATH: "<< (getenv("PATH") == NULL ? "NULL" : getenv("PATH")) << endl;
        sleep(1);
    }
    return 0;
}